Hobo MX Series Quick Start Manual

Submersible logger

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HOBO MX801 Submersible Logger Quick Start Guide

Overview

The HOBO MX801 Submersible Logger is designed to be used with compatible HOBO W-Series sensors to

log water parameters such as temperature, conductivity, depth and more.

This logger must be deployed with the sensors attached, as it is not waterproof if sensors are not attached.

If you are using this logger with two sensors, you will need to use the 2-sensor adapter. See the manual that

comes with that adapter for attaching the two sensors.

The following is an overview of the steps for configuring and deploying your logger:

1. Connect a Sensor

2. Calibrate the Sensor

3. Configure Your Logger

4. Deploy the Logger

5. Download Your Data

6. Process the Data

Note: If you are using either a W-CTD or W-CT sensor and it has not been in water, we

recommend attaching the sensor to the MX801 logger and soaking the sensor in tap

water for 24 hours before performing a conductivity calibration.

Connect a Sensor to the Logger

1. Take the rubber cap off the end of the logger.

2. Connect the sensor to the logger by aligning the alignment pin on the sensor with the hole on the log-

ger connector. Do not force the connection because you do not want to bend any of the pins.

Note: When assembling the logger and the sensor, make sure the o-rings and cable

connector surfaces are clear of any debris. Any contamination of these surfaces can

cause leaks that lead to logger failure.

U.S. and International Sales: 1-508-759-9500

www.onsetcomp.com/contact/support

registered trademarks of Onset Computer Corporation. All other trademarks are the property of their respective

owners. This product has been manufactured by Onset Computer Corporation and in compliance with Onset's

ISO 9001:2015 Quality Management System.

25705-A MAN-MX801-QSG

Page 1 HOBO MX801 Submersible Logger Quick Start Guide Overview The HOBO MX801 Submersible Logger is designed to be used with compatible HOBO W-Series sensors to log water parameters such as temperature, conductivity, depth and more. This logger must be deployed with the sensors attached, as it is not waterproof if sensors are not attached.
Page 2 5. Insert the magnetic fob into its holding spot on the coupler. Download and Open HOBOconnect You need to use HOBOconnect with your HOBO MX Series loggers. To download HOBOconnect go to: www.onsetcomp.com/products/software/hoboconnect Calibrate the Sensor If you are using conductivity, CTD, or DO sensors, calibrate them in your office or lab before configuring the loggers for deployment.
Page 3 HOBO MX801 Submersible Logger Quick Start Guide logger or a HOBO MX2001 logger to log barometric pressure. These require a cable and sensor to be attached to make them weatherproof, or use a termination plug (W-PLUG) on the MX802. HOBOconnect uses the barometric pressure data in combination with the CTD pressure data to calculate water level.
Page 4 HOBO MX801 Submersible Logger Quick Start Guide validation and data correction if necessary. 2. Pull up the logger from its deployment location. 3. In HOBOconnect, tap the MX801 tile and download data. 4. If you are redeploying the logger, clean the sensor if needed, before you deploy it again.

Mx800 series Mx801